What control is used to capture video.

I'm doing some research and I understand that Nintex forms can capture video via the mobile apps. I cannot seem to find any documentation or information on how to do this? Is there specific control to use? Are there any instructions posted anywhere. My users have seen the PDF that mentions mobile devices can be used to capture video/pictures on a form. Any information or links that someone could provide me to explain how to do this would be greatly appreciated.